Plan B

Despite stopping work she is now busier than she has ever been — giving talks, finishing the book, media interviews and trying to impart knowledge to the health profession about how to better treat patients.

But it isn't easy.

An invitation to an event in London, a three-hour train ride south of her home near Hull, involves intensive planning.

"I have to work out times of the train and sometimes I can do that and then sometimes I can't, so I sometimes need help," she said.

"And then I look at my dear friend Google and see where I'm going and print out a walking map to get there and not forgetting to print a walking map back.

"And all this goes into my folder with a plan B in case something goes wrong.

"All that has to be ready before the day because on the day I can't do anything like that.

"I have to focus simply on getting ready."

Wendy uses her iPad constantly, taking photos of streets and buildings to remember where she has walked and to find her way back.